package com.kfm.servlet;

import com.kfm.util.Contains;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

@WebServlet("/file")
public class FileServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String p = req.getParameter("p");

        File file = new File(Contains.FILE_PATH, p);
        if (file.exists()){
            FileInputStream fis = new FileInputStream(file);
            // 写出流
            fis.transferTo(resp.getOutputStream());

            fis.close();
        }

    }
}
